Untitled

<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Form Data</title>
</head>
<body>
    <form method="GET">
        <input type="text" name="name" placeholder="Name..."> <br>
        <input type="number" name="age" placeholder="Age..."> <br>
        Gender:<br><input type="radio" name="gender" value="Male"> Male <br>
                <input type="radio" name="gender" value="Female"> Female <br>
        <input type="submit" name="submit">
    </form>
    <?php
     if ((count($_GET) == 4) && isset($_GET["submit"])) {
      $name = htmlentities($_GET['name']);
      $age = htmlentities($_GET['age']);
      $gender = htmlentities($_GET['gender']);

      echo "My name is {$name}. I am {$age} years old. I am {$gender}.";
      }
    ?>
</body>
</html>